/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jena.graph.compose.test;

import org.apache.jena.graph.GraphMemFactory;
import org.apache.jena.graph.Graph;
import org.apache.jena.graph.GraphUtil;
import org.apache.jena.graph.Triple;
import org.apache.jena.graph.compose.MultiUnion;
import org.apache.jena.graph.test.NodeCreateUtils;
import org.apache.jena.rdf.model.impl.ReifierStd;
import org.apache.jena.rdf.model.test.ModelTestBase;
import org.apache.jena.util.iterator.ExtendedIterator;

/**
    Test the reifier for multi-unions.
*/
public class TestMultiUnionReifier extends ModelTestBase {
    public TestMultiUnionReifier(String name) {
        super(name);
    }

    public void testX() {
        MultiUnion mu = multi("a P b; !b Q c; ~c R d", "");
        for ( ExtendedIterator<Triple> it = GraphUtil.findAll(mu) ; it.hasNext() ; ) {
            System.err.println("]]  " + it.next());
        }
    }

    private MultiUnion multi( String a, String b )
        {
        Graph A = graph( a ), B = graph( b );
        return new MultiUnion( new Graph[] {A, B} );
        }

    static int count = 0;

    private Graph graph(String facts) {
        Graph result = GraphMemFactory.createDefaultGraph();
        String[] factArray = facts.split(";");
        for ( String aFactArray : factArray ) {
            String fact = aFactArray.trim();
            if ( fact.equals("") )
            {}
            else if ( fact.charAt(0) == '!' ) {
                Triple t = NodeCreateUtils.createTriple(fact.substring(1));
                result.add(t);
                ReifierStd.reifyAs(result, NodeCreateUtils.create("_r" + ++count), t);
            } else if ( fact.charAt(0) == '~' ) {
                Triple t = NodeCreateUtils.createTriple(fact.substring(1));
                ReifierStd.reifyAs(result, NodeCreateUtils.create("_r" + ++count), t);
            } else {
                result.add(NodeCreateUtils.createTriple(fact));
            }
        }
        return result;
    }
}
